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carbon-lang
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toolchain
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lower
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testdata
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interop
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cpp
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field.carbon

field.carbon 11 KB
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  1. // Part of the Carbon Language project, under the Apache License v2.0 with LLVM
    2. 

  2. // Exceptions. See /LICENSE for license information.
    3. 

  3. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
    4. 

  4. //
    5. 

  5. // INCLUDE-FILE: toolchain/testing/testdata/min_prelude/int.carbon
    6. 

  6. //
    7. 

  7. // AUTOUPDATE
    8. 

  8. // TIP: To test this file alone, run:
    9. 

  9. // TIP:   bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/lower/testdata/interop/cpp/field.carbon
    10. 

  10. // TIP: To dump output, run:
    11. 

  11. // TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/interop/cpp/field.carbon
    12. 

  12. 

  13. // --- struct.h
    14. 

  14. 

  15. struct A {
    16. 

  16.   int n;
    17. 

  17.   alignas(16) int m;
    18. 

  18. };
    19. 

  19. 

  20. // --- access_struct.carbon
    21. 

  21. 

  22. library "[[@TEST_NAME]]";
    23. 

  23. 

  24. import Cpp library "struct.h";
    25. 

  25. 

  26. // TODO: We generate 4-byte-aligned loads here, and should generate
    27. 

  27. // 16-byte-aligned loads as Clang does.
    28. 

  28. fn AccessN(a: Cpp.A) -> i32 {
    29. 

  29.   return a.n;
    30. 

  30. }
    31. 

  31. 

  32. fn AccessM(a: Cpp.A) -> i32 {
    33. 

  33.   return a.m;
    34. 

  34. }
    35. 

  35. 

  36. // --- assign_struct.carbon
    37. 

  37. 

  38. library "[[@TEST_NAME]]";
    39. 

  39. 

  40. import Cpp library "struct.h";
    41. 

  41. 

  42. // TODO: We generate 4-byte-aligned stores here, and should generate
    43. 

  43. // 16-byte-aligned stores as Clang does.
    44. 

  44. fn AssignN(p: Cpp.A*) {
    45. 

  45.   p->n = 1;
    46. 

  46. }
    47. 

  47. 

  48. fn AssignM(p: Cpp.A*) {
    49. 

  49.   p->m = 1;
    50. 

  50. }
    51. 

  51. 

  52. // --- union.h
    53. 

  53. 

  54. union A {
    55. 

  55.   int n;
    56. 

  56.   int m;
    57. 

  57. };
    58. 

  58. 

  59. // --- access_union.carbon
    60. 

  60. 

  61. library "[[@TEST_NAME]]";
    62. 

  62. 

  63. import Cpp library "union.h";
    64. 

  64. 

  65. fn AccessN(a: Cpp.A) -> i32 {
    66. 

  66.   return a.n;
    67. 

  67. }
    68. 

  68. 

  69. fn AccessM(a: Cpp.A) -> i32 {
    70. 

  70.   return a.m;
    71. 

  71. }
    72. 

  72. 

  73. // --- assign_union.carbon
    74. 

  74. 

  75. library "[[@TEST_NAME]]";
    76. 

  76. 

  77. import Cpp library "union.h";
    78. 

  78. 

  79. fn AssignN(p: Cpp.A*) {
    80. 

  80.   p->n = 1;
    81. 

  81. }
    82. 

  82. 

  83. fn AssignM(p: Cpp.A*) {
    84. 

  84.   p->m = 1;
    85. 

  85. }
    86. 

  86. 

  87. // CHECK:STDOUT: ; ModuleID = 'access_struct.carbon'
    88. 

  88. // CHECK:STDOUT: source_filename = "access_struct.carbon"
    89. 

  89. // CHECK:STDOUT: target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
    90. 

  90. // CHECK:STDOUT: target triple = "x86_64-unknown-linux-gnu"
    91. 

  91. // CHECK:STDOUT:
    92. 

  92. // CHECK:STDOUT: define i32 @_CAccessN.Main(ptr %a) !dbg !7 {
    93. 

  93. // CHECK:STDOUT: entry:
    94. 

  94. // CHECK:STDOUT:   %.loc9_11.1.n = getelementptr inbounds nuw [32 x i8], ptr %a, i32 0, i32 0, !dbg !10
    95. 

  95. // CHECK:STDOUT:   %.loc9_11.2 = load i32, ptr %.loc9_11.1.n, align 4, !dbg !10
    96. 

  96. // CHECK:STDOUT:   ret i32 %.loc9_11.2, !dbg !11
    97. 

  97. // CHECK:STDOUT: }
    98. 

  98. // CHECK:STDOUT:
    99. 

  99. // CHECK:STDOUT: define i32 @_CAccessM.Main(ptr %a) !dbg !12 {
    100. 

  100. // CHECK:STDOUT: entry:
    101. 

  101. // CHECK:STDOUT:   %.loc13_11.1.m = getelementptr inbounds nuw [32 x i8], ptr %a, i32 0, i32 16, !dbg !13
    102. 

  102. // CHECK:STDOUT:   %.loc13_11.2 = load i32, ptr %.loc13_11.1.m, align 4, !dbg !13
    103. 

  103. // CHECK:STDOUT:   ret i32 %.loc13_11.2, !dbg !14
    104. 

  104. // CHECK:STDOUT: }
    105. 

  105. // CHECK:STDOUT:
    106. 

  106. // CHECK:STDOUT: !llvm.module.flags = !{!0, !1, !2, !3, !4}
    107. 

  107. // CHECK:STDOUT: !llvm.dbg.cu = !{!5}
    108. 

  108. // CHECK:STDOUT:
    109. 

  109. // CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
    110. 

  110. // CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
    111. 

  111. // CHECK:STDOUT: !2 = !{i32 1, !"wchar_size", i32 4}
    112. 

  112. // CHECK:STDOUT: !3 = !{i32 8, !"PIC Level", i32 0}
    113. 

  113. // CHECK:STDOUT: !4 = !{i32 7, !"PIE Level", i32 2}
    114. 

  114. // CHECK:STDOUT: !5 = distinct !DICompileUnit(language: DW_LANG_C, file: !6, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
    115. 

  115. // CHECK:STDOUT: !6 = !DIFile(filename: "access_struct.carbon", directory: "")
    116. 

  116. // CHECK:STDOUT: !7 = distinct !DISubprogram(name: "AccessN", linkageName: "_CAccessN.Main", scope: null, file: !6, line: 8, type: !8, spFlags: DISPFlagDefinition, unit: !5)
    117. 

  117. // CHECK:STDOUT: !8 = !DISubroutineType(types: !9)
    118. 

  118. // CHECK:STDOUT: !9 = !{}
    119. 

  119. // CHECK:STDOUT: !10 = !DILocation(line: 9, column: 10, scope: !7)
    120. 

  120. // CHECK:STDOUT: !11 = !DILocation(line: 9, column: 3, scope: !7)
    121. 

  121. // CHECK:STDOUT: !12 = distinct !DISubprogram(name: "AccessM", linkageName: "_CAccessM.Main", scope: null, file: !6, line: 12, type: !8, spFlags: DISPFlagDefinition, unit: !5)
    122. 

  122. // CHECK:STDOUT: !13 = !DILocation(line: 13, column: 10, scope: !12)
    123. 

  123. // CHECK:STDOUT: !14 = !DILocation(line: 13, column: 3, scope: !12)
    124. 

  124. // CHECK:STDOUT: ; ModuleID = 'assign_struct.carbon'
    125. 

  125. // CHECK:STDOUT: source_filename = "assign_struct.carbon"
    126. 

  126. // CHECK:STDOUT: target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
    127. 

  127. // CHECK:STDOUT: target triple = "x86_64-unknown-linux-gnu"
    128. 

  128. // CHECK:STDOUT:
    129. 

  129. // CHECK:STDOUT: define void @_CAssignN.Main(ptr %p) !dbg !7 {
    130. 

  130. // CHECK:STDOUT: entry:
    131. 

  131. // CHECK:STDOUT:   %.loc9_4.2.n = getelementptr inbounds nuw [32 x i8], ptr %p, i32 0, i32 0, !dbg !10
    132. 

  132. // CHECK:STDOUT:   store i32 1, ptr %.loc9_4.2.n, align 4, !dbg !10
    133. 

  133. // CHECK:STDOUT:   ret void, !dbg !11
    134. 

  134. // CHECK:STDOUT: }
    135. 

  135. // CHECK:STDOUT:
    136. 

  136. // CHECK:STDOUT: define void @_CAssignM.Main(ptr %p) !dbg !12 {
    137. 

  137. // CHECK:STDOUT: entry:
    138. 

  138. // CHECK:STDOUT:   %.loc13_4.2.m = getelementptr inbounds nuw [32 x i8], ptr %p, i32 0, i32 16, !dbg !13
    139. 

  139. // CHECK:STDOUT:   store i32 1, ptr %.loc13_4.2.m, align 4, !dbg !13
    140. 

  140. // CHECK:STDOUT:   ret void, !dbg !14
    141. 

  141. // CHECK:STDOUT: }
    142. 

  142. // CHECK:STDOUT:
    143. 

  143. // CHECK:STDOUT: !llvm.module.flags = !{!0, !1, !2, !3, !4}
    144. 

  144. // CHECK:STDOUT: !llvm.dbg.cu = !{!5}
    145. 

  145. // CHECK:STDOUT:
    146. 

  146. // CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
    147. 

  147. // CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
    148. 

  148. // CHECK:STDOUT: !2 = !{i32 1, !"wchar_size", i32 4}
    149. 

  149. // CHECK:STDOUT: !3 = !{i32 8, !"PIC Level", i32 0}
    150. 

  150. // CHECK:STDOUT: !4 = !{i32 7, !"PIE Level", i32 2}
    151. 

  151. // CHECK:STDOUT: !5 = distinct !DICompileUnit(language: DW_LANG_C, file: !6, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
    152. 

  152. // CHECK:STDOUT: !6 = !DIFile(filename: "assign_struct.carbon", directory: "")
    153. 

  153. // CHECK:STDOUT: !7 = distinct !DISubprogram(name: "AssignN", linkageName: "_CAssignN.Main", scope: null, file: !6, line: 8, type: !8, spFlags: DISPFlagDefinition, unit: !5)
    154. 

  154. // CHECK:STDOUT: !8 = !DISubroutineType(types: !9)
    155. 

  155. // CHECK:STDOUT: !9 = !{}
    156. 

  156. // CHECK:STDOUT: !10 = !DILocation(line: 9, column: 3, scope: !7)
    157. 

  157. // CHECK:STDOUT: !11 = !DILocation(line: 8, column: 1, scope: !7)
    158. 

  158. // CHECK:STDOUT: !12 = distinct !DISubprogram(name: "AssignM", linkageName: "_CAssignM.Main", scope: null, file: !6, line: 12, type: !8, spFlags: DISPFlagDefinition, unit: !5)
    159. 

  159. // CHECK:STDOUT: !13 = !DILocation(line: 13, column: 3, scope: !12)
    160. 

  160. // CHECK:STDOUT: !14 = !DILocation(line: 12, column: 1, scope: !12)
    161. 

  161. // CHECK:STDOUT: ; ModuleID = 'access_union.carbon'
    162. 

  162. // CHECK:STDOUT: source_filename = "access_union.carbon"
    163. 

  163. // CHECK:STDOUT: target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
    164. 

  164. // CHECK:STDOUT: target triple = "x86_64-unknown-linux-gnu"
    165. 

  165. // CHECK:STDOUT:
    166. 

  166. // CHECK:STDOUT: define i32 @_CAccessN.Main(ptr %a) !dbg !7 {
    167. 

  167. // CHECK:STDOUT: entry:
    168. 

  168. // CHECK:STDOUT:   %.loc7_11.1.n = getelementptr inbounds nuw [4 x i8], ptr %a, i32 0, i32 0, !dbg !10
    169. 

  169. // CHECK:STDOUT:   %.loc7_11.2 = load i32, ptr %.loc7_11.1.n, align 4, !dbg !10
    170. 

  170. // CHECK:STDOUT:   ret i32 %.loc7_11.2, !dbg !11
    171. 

  171. // CHECK:STDOUT: }
    172. 

  172. // CHECK:STDOUT:
    173. 

  173. // CHECK:STDOUT: define i32 @_CAccessM.Main(ptr %a) !dbg !12 {
    174. 

  174. // CHECK:STDOUT: entry:
    175. 

  175. // CHECK:STDOUT:   %.loc11_11.1.m = getelementptr inbounds nuw [4 x i8], ptr %a, i32 0, i32 0, !dbg !13
    176. 

  176. // CHECK:STDOUT:   %.loc11_11.2 = load i32, ptr %.loc11_11.1.m, align 4, !dbg !13
    177. 

  177. // CHECK:STDOUT:   ret i32 %.loc11_11.2, !dbg !14
    178. 

  178. // CHECK:STDOUT: }
    179. 

  179. // CHECK:STDOUT:
    180. 

  180. // CHECK:STDOUT: !llvm.module.flags = !{!0, !1, !2, !3, !4}
    181. 

  181. // CHECK:STDOUT: !llvm.dbg.cu = !{!5}
    182. 

  182. // CHECK:STDOUT:
    183. 

  183. // CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
    184. 

  184. // CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
    185. 

  185. // CHECK:STDOUT: !2 = !{i32 1, !"wchar_size", i32 4}
    186. 

  186. // CHECK:STDOUT: !3 = !{i32 8, !"PIC Level", i32 0}
    187. 

  187. // CHECK:STDOUT: !4 = !{i32 7, !"PIE Level", i32 2}
    188. 

  188. // CHECK:STDOUT: !5 = distinct !DICompileUnit(language: DW_LANG_C, file: !6, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
    189. 

  189. // CHECK:STDOUT: !6 = !DIFile(filename: "access_union.carbon", directory: "")
    190. 

  190. // CHECK:STDOUT: !7 = distinct !DISubprogram(name: "AccessN", linkageName: "_CAccessN.Main", scope: null, file: !6, line: 6, type: !8, spFlags: DISPFlagDefinition, unit: !5)
    191. 

  191. // CHECK:STDOUT: !8 = !DISubroutineType(types: !9)
    192. 

  192. // CHECK:STDOUT: !9 = !{}
    193. 

  193. // CHECK:STDOUT: !10 = !DILocation(line: 7, column: 10, scope: !7)
    194. 

  194. // CHECK:STDOUT: !11 = !DILocation(line: 7, column: 3, scope: !7)
    195. 

  195. // CHECK:STDOUT: !12 = distinct !DISubprogram(name: "AccessM", linkageName: "_CAccessM.Main", scope: null, file: !6, line: 10, type: !8, spFlags: DISPFlagDefinition, unit: !5)
    196. 

  196. // CHECK:STDOUT: !13 = !DILocation(line: 11, column: 10, scope: !12)
    197. 

  197. // CHECK:STDOUT: !14 = !DILocation(line: 11, column: 3, scope: !12)
    198. 

  198. // CHECK:STDOUT: ; ModuleID = 'assign_union.carbon'
    199. 

  199. // CHECK:STDOUT: source_filename = "assign_union.carbon"
    200. 

  200. // CHECK:STDOUT: target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
    201. 

  201. // CHECK:STDOUT: target triple = "x86_64-unknown-linux-gnu"
    202. 

  202. // CHECK:STDOUT:
    203. 

  203. // CHECK:STDOUT: define void @_CAssignN.Main(ptr %p) !dbg !7 {
    204. 

  204. // CHECK:STDOUT: entry:
    205. 

  205. // CHECK:STDOUT:   %.loc7_4.2.n = getelementptr inbounds nuw [4 x i8], ptr %p, i32 0, i32 0, !dbg !10
    206. 

  206. // CHECK:STDOUT:   store i32 1, ptr %.loc7_4.2.n, align 4, !dbg !10
    207. 

  207. // CHECK:STDOUT:   ret void, !dbg !11
    208. 

  208. // CHECK:STDOUT: }
    209. 

  209. // CHECK:STDOUT:
    210. 

  210. // CHECK:STDOUT: define void @_CAssignM.Main(ptr %p) !dbg !12 {
    211. 

  211. // CHECK:STDOUT: entry:
    212. 

  212. // CHECK:STDOUT:   %.loc11_4.2.m = getelementptr inbounds nuw [4 x i8], ptr %p, i32 0, i32 0, !dbg !13
    213. 

  213. // CHECK:STDOUT:   store i32 1, ptr %.loc11_4.2.m, align 4, !dbg !13
    214. 

  214. // CHECK:STDOUT:   ret void, !dbg !14
    215. 

  215. // CHECK:STDOUT: }
    216. 

  216. // CHECK:STDOUT:
    217. 

  217. // CHECK:STDOUT: !llvm.module.flags = !{!0, !1, !2, !3, !4}
    218. 

  218. // CHECK:STDOUT: !llvm.dbg.cu = !{!5}
    219. 

  219. // CHECK:STDOUT:
    220. 

  220. // CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
    221. 

  221. // CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
    222. 

  222. // CHECK:STDOUT: !2 = !{i32 1, !"wchar_size", i32 4}
    223. 

  223. // CHECK:STDOUT: !3 = !{i32 8, !"PIC Level", i32 0}
    224. 

  224. // CHECK:STDOUT: !4 = !{i32 7, !"PIE Level", i32 2}
    225. 

  225. // CHECK:STDOUT: !5 = distinct !DICompileUnit(language: DW_LANG_C, file: !6, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
    226. 

  226. // CHECK:STDOUT: !6 = !DIFile(filename: "assign_union.carbon", directory: "")
    227. 

  227. // CHECK:STDOUT: !7 = distinct !DISubprogram(name: "AssignN", linkageName: "_CAssignN.Main", scope: null, file: !6, line: 6, type: !8, spFlags: DISPFlagDefinition, unit: !5)
    228. 

  228. // CHECK:STDOUT: !8 = !DISubroutineType(types: !9)
    229. 

  229. // CHECK:STDOUT: !9 = !{}
    230. 

  230. // CHECK:STDOUT: !10 = !DILocation(line: 7, column: 3, scope: !7)
    231. 

  231. // CHECK:STDOUT: !11 = !DILocation(line: 6, column: 1, scope: !7)
    232. 

  232. // CHECK:STDOUT: !12 = distinct !DISubprogram(name: "AssignM", linkageName: "_CAssignM.Main", scope: null, file: !6, line: 10, type: !8, spFlags: DISPFlagDefinition, unit: !5)
    233. 

  233. // CHECK:STDOUT: !13 = !DILocation(line: 11, column: 3, scope: !12)
    234. 

  234. // CHECK:STDOUT: !14 = !DILocation(line: 10, column: 1, scope: !12)
    235.